Hi

I went to my allotment this morning and somehow the 20 or so cabbage collars i put around the bae of my plants in the hope that it might help prevent root fly are no longer around the stem of the plants. Each of them are now about a foot away from the plant and there are signs of disturbance around the base!

Any ideas what could have done this, has anyone expereineced thios before and how i could prevent it from happening again?

Thanks